/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 13:05:38,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 13:05:38,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 13:05:38,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 13:05:38,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 13:05:38,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 13:05:38,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 13:05:38,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 13:05:38,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 13:05:38,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 13:05:38,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 13:05:38,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 13:05:38,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 13:05:38,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 13:05:38,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 13:05:38,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 13:05:38,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 13:05:38,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 13:05:38,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 13:05:38,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 13:05:38,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 13:05:38,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 13:05:38,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 13:05:38,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 13:05:38,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-28 13:05:38,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 13:05:38,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 13:05:38,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 13:05:38,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 13:05:38,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 13:05:38,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 13:05:38,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 13:05:38,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 13:05:38,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 13:05:38,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 13:05:38,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 13:05:38,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 13:05:38,142 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 13:05:38,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 13:05:38,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 13:05:38,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 13:05:38,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:05:38,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 13:05:38,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 13:05:38,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 13:05:38,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 13:05:38,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 13:05:38,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 13:05:38,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 13:05:38,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 13:05:38,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-28 13:05:38,323 INFO L275 PluginConnector]: CDTParser initialized [2022-01-28 13:05:38,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-28 13:05:38,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fefde42/a2f4bd31f482465496726c59247b72e7/FLAGc3dab6870 [2022-01-28 13:05:38,707 INFO L306 CDTParser]: Found 1 translation units. [2022-01-28 13:05:38,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2022-01-28 13:05:38,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fefde42/a2f4bd31f482465496726c59247b72e7/FLAGc3dab6870 [2022-01-28 13:05:38,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fefde42/a2f4bd31f482465496726c59247b72e7 [2022-01-28 13:05:38,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 13:05:38,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-28 13:05:38,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-28 13:05:38,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-28 13:05:38,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-28 13:05:38,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b2d448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38, skipping insertion in model container [2022-01-28 13:05:38,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-28 13:05:38,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-28 13:05:38,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-01-28 13:05:38,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:05:38,893 INFO L203 MainTranslator]: Completed pre-run [2022-01-28 13:05:38,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-01-28 13:05:38,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 13:05:38,919 INFO L208 MainTranslator]: Completed translation [2022-01-28 13:05:38,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38 WrapperNode [2022-01-28 13:05:38,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-28 13:05:38,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 13:05:38,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 13:05:38,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 13:05:38,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,942 INFO L137 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-01-28 13:05:38,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 13:05:38,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 13:05:38,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 13:05:38,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 13:05:38,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 13:05:38,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 13:05:38,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 13:05:38,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 13:05:38,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (1/1) ... [2022-01-28 13:05:38,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 13:05:38,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:38,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-28 13:05:39,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-28 13:05:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 13:05:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 13:05:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-28 13:05:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-28 13:05:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 13:05:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 13:05:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-28 13:05:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-28 13:05:39,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 13:05:39,089 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 13:05:39,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 13:05:39,262 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 13:05:39,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 13:05:39,304 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-28 13:05:39,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:05:39 BoogieIcfgContainer [2022-01-28 13:05:39,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 13:05:39,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 13:05:39,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 13:05:39,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 13:05:39,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:05:38" (1/3) ... [2022-01-28 13:05:39,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cf21a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:05:39, skipping insertion in model container [2022-01-28 13:05:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:05:38" (2/3) ... [2022-01-28 13:05:39,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cf21a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:05:39, skipping insertion in model container [2022-01-28 13:05:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:05:39" (3/3) ... [2022-01-28 13:05:39,311 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-01-28 13:05:39,315 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 13:05:39,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 13:05:39,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 13:05:39,316 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 13:05:39,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,335 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,336 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,338 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,343 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,343 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,347 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,348 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 13:05:39,349 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-28 13:05:39,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 13:05:39,406 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-28 13:05:39,406 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-28 13:05:39,417 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 109 transitions, 242 flow [2022-01-28 13:05:39,529 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-28 13:05:39,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:39,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:39,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 91463443, now seen corresponding path program 1 times [2022-01-28 13:05:39,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:39,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739232064] [2022-01-28 13:05:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:39,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:39,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739232064] [2022-01-28 13:05:39,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739232064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:39,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 13:05:39,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286418171] [2022-01-28 13:05:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:39,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-28 13:05:39,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-28 13:05:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:05:39,824 INFO L87 Difference]: Start difference. First operand has 2916 states, 2915 states have (on average 3.608576329331046) internal successors, (10519), 2915 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:39,905 INFO L93 Difference]: Finished difference Result 2916 states and 10016 transitions. [2022-01-28 13:05:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 13:05:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-28 13:05:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:39,940 INFO L225 Difference]: With dead ends: 2916 [2022-01-28 13:05:39,940 INFO L226 Difference]: Without dead ends: 2915 [2022-01-28 13:05:39,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 13:05:39,945 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:39,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:05:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-01-28 13:05:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2022-01-28 13:05:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 3.436856554564173) internal successors, (10015), 2914 states have internal predecessors, (10015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 10015 transitions. [2022-01-28 13:05:40,093 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 10015 transitions. Word has length 75 [2022-01-28 13:05:40,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:40,093 INFO L470 AbstractCegarLoop]: Abstraction has 2915 states and 10015 transitions. [2022-01-28 13:05:40,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 10015 transitions. [2022-01-28 13:05:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-28 13:05:40,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:40,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:40,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 13:05:40,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1049948689, now seen corresponding path program 1 times [2022-01-28 13:05:40,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:40,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399857353] [2022-01-28 13:05:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:40,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:40,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399857353] [2022-01-28 13:05:40,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399857353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:40,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:40,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-28 13:05:40,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85985785] [2022-01-28 13:05:40,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:40,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:05:40,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:05:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:40,337 INFO L87 Difference]: Start difference. First operand 2915 states and 10015 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:40,462 INFO L93 Difference]: Finished difference Result 2531 states and 8752 transitions. [2022-01-28 13:05:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 13:05:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-28 13:05:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:40,475 INFO L225 Difference]: With dead ends: 2531 [2022-01-28 13:05:40,475 INFO L226 Difference]: Without dead ends: 2531 [2022-01-28 13:05:40,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:05:40,479 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 152 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:40,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 277 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-01-28 13:05:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2531. [2022-01-28 13:05:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2530 states have (on average 3.459288537549407) internal successors, (8752), 2530 states have internal predecessors, (8752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 8752 transitions. [2022-01-28 13:05:40,551 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 8752 transitions. Word has length 75 [2022-01-28 13:05:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:40,552 INFO L470 AbstractCegarLoop]: Abstraction has 2531 states and 8752 transitions. [2022-01-28 13:05:40,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 8752 transitions. [2022-01-28 13:05:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-28 13:05:40,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:40,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:40,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 13:05:40,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1909334867, now seen corresponding path program 2 times [2022-01-28 13:05:40,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:40,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664118616] [2022-01-28 13:05:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:40,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:40,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664118616] [2022-01-28 13:05:40,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664118616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:40,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:40,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 13:05:40,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49884263] [2022-01-28 13:05:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:40,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-28 13:05:40,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-28 13:05:40,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:05:40,810 INFO L87 Difference]: Start difference. First operand 2531 states and 8752 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:40,931 INFO L93 Difference]: Finished difference Result 2663 states and 9215 transitions. [2022-01-28 13:05:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:05:40,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-28 13:05:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:40,946 INFO L225 Difference]: With dead ends: 2663 [2022-01-28 13:05:40,952 INFO L226 Difference]: Without dead ends: 2663 [2022-01-28 13:05:40,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-28 13:05:40,962 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:40,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 389 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-01-28 13:05:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2022-01-28 13:05:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 3.4616829451540196) internal successors, (9215), 2662 states have internal predecessors, (9215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 9215 transitions. [2022-01-28 13:05:41,029 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 9215 transitions. Word has length 75 [2022-01-28 13:05:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:41,030 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 9215 transitions. [2022-01-28 13:05:41,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 9215 transitions. [2022-01-28 13:05:41,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-28 13:05:41,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:41,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:41,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 13:05:41,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash 856506299, now seen corresponding path program 3 times [2022-01-28 13:05:41,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618578936] [2022-01-28 13:05:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:41,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:41,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618578936] [2022-01-28 13:05:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618578936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:41,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:41,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 13:05:41,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536468585] [2022-01-28 13:05:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:41,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-28 13:05:41,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-28 13:05:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:05:41,180 INFO L87 Difference]: Start difference. First operand 2663 states and 9215 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:41,357 INFO L93 Difference]: Finished difference Result 7439 states and 26444 transitions. [2022-01-28 13:05:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-28 13:05:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-28 13:05:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:41,375 INFO L225 Difference]: With dead ends: 7439 [2022-01-28 13:05:41,375 INFO L226 Difference]: Without dead ends: 3563 [2022-01-28 13:05:41,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-28 13:05:41,380 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 173 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:41,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 542 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-01-28 13:05:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3563. [2022-01-28 13:05:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3562 states have (on average 3.3613138686131387) internal successors, (11973), 3562 states have internal predecessors, (11973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 11973 transitions. [2022-01-28 13:05:41,492 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 11973 transitions. Word has length 75 [2022-01-28 13:05:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:41,493 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 11973 transitions. [2022-01-28 13:05:41,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 11973 transitions. [2022-01-28 13:05:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-28 13:05:41,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:41,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:41,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 13:05:41,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2004122008, now seen corresponding path program 1 times [2022-01-28 13:05:41,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:41,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771109814] [2022-01-28 13:05:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:41,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:41,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:41,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771109814] [2022-01-28 13:05:41,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771109814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:41,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:41,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:05:41,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974675239] [2022-01-28 13:05:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:41,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:05:41,611 INFO L87 Difference]: Start difference. First operand 3563 states and 11973 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:41,717 INFO L93 Difference]: Finished difference Result 5068 states and 17267 transitions. [2022-01-28 13:05:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:05:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-28 13:05:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:41,737 INFO L225 Difference]: With dead ends: 5068 [2022-01-28 13:05:41,737 INFO L226 Difference]: Without dead ends: 4060 [2022-01-28 13:05:41,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-28 13:05:41,738 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 113 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:41,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 459 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2022-01-28 13:05:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 4000. [2022-01-28 13:05:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3999 states have (on average 3.3220805201300325) internal successors, (13285), 3999 states have internal predecessors, (13285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 13285 transitions. [2022-01-28 13:05:41,872 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 13285 transitions. Word has length 80 [2022-01-28 13:05:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:41,873 INFO L470 AbstractCegarLoop]: Abstraction has 4000 states and 13285 transitions. [2022-01-28 13:05:41,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 13285 transitions. [2022-01-28 13:05:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-28 13:05:41,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:41,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:41,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 13:05:41,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1548045334, now seen corresponding path program 2 times [2022-01-28 13:05:41,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:41,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766188350] [2022-01-28 13:05:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:41,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:41,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:41,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766188350] [2022-01-28 13:05:41,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766188350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:41,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:41,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:05:41,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519163292] [2022-01-28 13:05:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:41,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:41,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:05:41,952 INFO L87 Difference]: Start difference. First operand 4000 states and 13285 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:42,026 INFO L93 Difference]: Finished difference Result 6602 states and 21738 transitions. [2022-01-28 13:05:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 13:05:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-28 13:05:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:42,047 INFO L225 Difference]: With dead ends: 6602 [2022-01-28 13:05:42,048 INFO L226 Difference]: Without dead ends: 5866 [2022-01-28 13:05:42,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:42,049 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 191 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:42,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 193 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:05:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2022-01-28 13:05:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 4548. [2022-01-28 13:05:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4547 states have (on average 3.316252474158786) internal successors, (15079), 4547 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 15079 transitions. [2022-01-28 13:05:42,201 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 15079 transitions. Word has length 80 [2022-01-28 13:05:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:42,201 INFO L470 AbstractCegarLoop]: Abstraction has 4548 states and 15079 transitions. [2022-01-28 13:05:42,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 15079 transitions. [2022-01-28 13:05:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-28 13:05:42,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:42,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:42,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 13:05:42,212 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1694261003, now seen corresponding path program 1 times [2022-01-28 13:05:42,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:42,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305751514] [2022-01-28 13:05:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:42,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:42,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305751514] [2022-01-28 13:05:42,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305751514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880710098] [2022-01-28 13:05:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:42,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:42,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:42,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-28 13:05:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:42,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-28 13:05:42,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:42,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:42,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880710098] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:42,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:42,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-28 13:05:42,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258380243] [2022-01-28 13:05:42,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:42,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:05:42,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:05:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:42,658 INFO L87 Difference]: Start difference. First operand 4548 states and 15079 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:42,756 INFO L93 Difference]: Finished difference Result 7346 states and 24462 transitions. [2022-01-28 13:05:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 13:05:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-28 13:05:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:42,774 INFO L225 Difference]: With dead ends: 7346 [2022-01-28 13:05:42,774 INFO L226 Difference]: Without dead ends: 6107 [2022-01-28 13:05:42,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:05:42,775 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 191 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:42,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 331 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6107 states. [2022-01-28 13:05:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6107 to 4633. [2022-01-28 13:05:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4632 states have (on average 3.309153713298791) internal successors, (15328), 4632 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 15328 transitions. [2022-01-28 13:05:42,957 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 15328 transitions. Word has length 80 [2022-01-28 13:05:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:42,958 INFO L470 AbstractCegarLoop]: Abstraction has 4633 states and 15328 transitions. [2022-01-28 13:05:42,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 15328 transitions. [2022-01-28 13:05:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-28 13:05:42,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:42,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:43,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:43,202 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1152016885, now seen corresponding path program 2 times [2022-01-28 13:05:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90242498] [2022-01-28 13:05:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:43,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:43,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90242498] [2022-01-28 13:05:43,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90242498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:43,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:43,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:05:43,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943613329] [2022-01-28 13:05:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:43,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:43,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:05:43,246 INFO L87 Difference]: Start difference. First operand 4633 states and 15328 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:43,302 INFO L93 Difference]: Finished difference Result 7055 states and 23143 transitions. [2022-01-28 13:05:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-28 13:05:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-28 13:05:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:43,319 INFO L225 Difference]: With dead ends: 7055 [2022-01-28 13:05:43,320 INFO L226 Difference]: Without dead ends: 6433 [2022-01-28 13:05:43,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:43,320 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 139 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:43,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 180 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 13:05:43,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2022-01-28 13:05:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 5235. [2022-01-28 13:05:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 3.3056935422239206) internal successors, (17302), 5234 states have internal predecessors, (17302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 17302 transitions. [2022-01-28 13:05:43,425 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 17302 transitions. Word has length 80 [2022-01-28 13:05:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:43,425 INFO L470 AbstractCegarLoop]: Abstraction has 5235 states and 17302 transitions. [2022-01-28 13:05:43,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 17302 transitions. [2022-01-28 13:05:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:05:43,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:43,434 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:43,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-28 13:05:43,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -343466816, now seen corresponding path program 1 times [2022-01-28 13:05:43,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:43,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333345361] [2022-01-28 13:05:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:43,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:43,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333345361] [2022-01-28 13:05:43,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333345361] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510062921] [2022-01-28 13:05:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:43,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:43,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:43,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 13:05:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:43,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-28 13:05:43,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:43,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:43,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510062921] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:43,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:43,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-01-28 13:05:43,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645616340] [2022-01-28 13:05:43,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:43,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-28 13:05:43,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-28 13:05:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-28 13:05:43,937 INFO L87 Difference]: Start difference. First operand 5235 states and 17302 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:44,354 INFO L93 Difference]: Finished difference Result 14044 states and 46717 transitions. [2022-01-28 13:05:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-28 13:05:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-28 13:05:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:44,379 INFO L225 Difference]: With dead ends: 14044 [2022-01-28 13:05:44,380 INFO L226 Difference]: Without dead ends: 9391 [2022-01-28 13:05:44,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-01-28 13:05:44,381 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 588 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:44,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1746 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:05:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9391 states. [2022-01-28 13:05:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9391 to 6135. [2022-01-28 13:05:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.3059993478969676) internal successors, (20279), 6134 states have internal predecessors, (20279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20279 transitions. [2022-01-28 13:05:44,552 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20279 transitions. Word has length 85 [2022-01-28 13:05:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:44,553 INFO L470 AbstractCegarLoop]: Abstraction has 6135 states and 20279 transitions. [2022-01-28 13:05:44,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20279 transitions. [2022-01-28 13:05:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:05:44,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:44,564 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:44,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:44,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-28 13:05:44,773 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash -159921894, now seen corresponding path program 2 times [2022-01-28 13:05:44,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:44,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443666428] [2022-01-28 13:05:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:44,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:05:44,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:44,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443666428] [2022-01-28 13:05:44,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443666428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:44,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:44,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:05:44,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125241523] [2022-01-28 13:05:44,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:44,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:44,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:05:44,832 INFO L87 Difference]: Start difference. First operand 6135 states and 20279 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:44,932 INFO L93 Difference]: Finished difference Result 9155 states and 30086 transitions. [2022-01-28 13:05:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 13:05:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-28 13:05:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:44,956 INFO L225 Difference]: With dead ends: 9155 [2022-01-28 13:05:44,956 INFO L226 Difference]: Without dead ends: 8975 [2022-01-28 13:05:44,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:44,957 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 123 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:44,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 348 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-28 13:05:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 6715. [2022-01-28 13:05:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 6714 states have (on average 3.318588025022341) internal successors, (22281), 6714 states have internal predecessors, (22281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 22281 transitions. [2022-01-28 13:05:45,153 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 22281 transitions. Word has length 85 [2022-01-28 13:05:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:45,153 INFO L470 AbstractCegarLoop]: Abstraction has 6715 states and 22281 transitions. [2022-01-28 13:05:45,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 22281 transitions. [2022-01-28 13:05:45,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:05:45,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:45,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:45,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-28 13:05:45,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:45,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1245455102, now seen corresponding path program 3 times [2022-01-28 13:05:45,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:45,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498697295] [2022-01-28 13:05:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:45,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:45,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:45,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498697295] [2022-01-28 13:05:45,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498697295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:45,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529461554] [2022-01-28 13:05:45,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:05:45,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:45,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:45,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 13:05:45,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 13:05:45,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:05:45,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-28 13:05:45,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:45,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:45,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529461554] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:45,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-28 13:05:45,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2022-01-28 13:05:45,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353208565] [2022-01-28 13:05:45,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:45,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:45,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-28 13:05:45,573 INFO L87 Difference]: Start difference. First operand 6715 states and 22281 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:45,687 INFO L93 Difference]: Finished difference Result 8121 states and 26664 transitions. [2022-01-28 13:05:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:05:45,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-28 13:05:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:45,705 INFO L225 Difference]: With dead ends: 8121 [2022-01-28 13:05:45,705 INFO L226 Difference]: Without dead ends: 7980 [2022-01-28 13:05:45,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-28 13:05:45,705 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 131 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:45,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 388 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2022-01-28 13:05:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 6145. [2022-01-28 13:05:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 6144 states have (on average 3.3053385416666665) internal successors, (20308), 6144 states have internal predecessors, (20308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 20308 transitions. [2022-01-28 13:05:45,899 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 20308 transitions. Word has length 85 [2022-01-28 13:05:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:45,899 INFO L470 AbstractCegarLoop]: Abstraction has 6145 states and 20308 transitions. [2022-01-28 13:05:45,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 20308 transitions. [2022-01-28 13:05:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:05:45,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:45,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:45,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:46,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:46,127 INFO L85 PathProgramCache]: Analyzing trace with hash 431296120, now seen corresponding path program 4 times [2022-01-28 13:05:46,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572961226] [2022-01-28 13:05:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:46,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:05:46,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:46,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572961226] [2022-01-28 13:05:46,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572961226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:46,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:46,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-28 13:05:46,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434792066] [2022-01-28 13:05:46,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:46,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-28 13:05:46,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-28 13:05:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-28 13:05:46,185 INFO L87 Difference]: Start difference. First operand 6145 states and 20308 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:46,277 INFO L93 Difference]: Finished difference Result 6994 states and 22727 transitions. [2022-01-28 13:05:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-28 13:05:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-28 13:05:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:46,293 INFO L225 Difference]: With dead ends: 6994 [2022-01-28 13:05:46,293 INFO L226 Difference]: Without dead ends: 6754 [2022-01-28 13:05:46,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:05:46,294 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 114 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:46,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 400 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2022-01-28 13:05:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 5995. [2022-01-28 13:05:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5995 states, 5994 states have (on average 3.305805805805806) internal successors, (19815), 5994 states have internal predecessors, (19815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5995 states to 5995 states and 19815 transitions. [2022-01-28 13:05:46,398 INFO L78 Accepts]: Start accepts. Automaton has 5995 states and 19815 transitions. Word has length 85 [2022-01-28 13:05:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:46,398 INFO L470 AbstractCegarLoop]: Abstraction has 5995 states and 19815 transitions. [2022-01-28 13:05:46,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5995 states and 19815 transitions. [2022-01-28 13:05:46,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-28 13:05:46,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:46,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:46,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-28 13:05:46,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:46,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash -375566370, now seen corresponding path program 5 times [2022-01-28 13:05:46,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:46,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641072082] [2022-01-28 13:05:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:46,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 13:05:46,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:46,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641072082] [2022-01-28 13:05:46,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641072082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 13:05:46,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 13:05:46,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-28 13:05:46,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532724389] [2022-01-28 13:05:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 13:05:46,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-28 13:05:46,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-28 13:05:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-28 13:05:46,496 INFO L87 Difference]: Start difference. First operand 5995 states and 19815 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:46,584 INFO L93 Difference]: Finished difference Result 8397 states and 27246 transitions. [2022-01-28 13:05:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-28 13:05:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-28 13:05:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:46,602 INFO L225 Difference]: With dead ends: 8397 [2022-01-28 13:05:46,602 INFO L226 Difference]: Without dead ends: 8256 [2022-01-28 13:05:46,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-28 13:05:46,603 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 155 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:46,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 371 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states. [2022-01-28 13:05:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8256 to 5214. [2022-01-28 13:05:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 3.2651064646077117) internal successors, (17021), 5213 states have internal predecessors, (17021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 17021 transitions. [2022-01-28 13:05:46,758 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 17021 transitions. Word has length 85 [2022-01-28 13:05:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:46,758 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 17021 transitions. [2022-01-28 13:05:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 17021 transitions. [2022-01-28 13:05:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-28 13:05:46,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:46,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-28 13:05:46,767 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 274255267, now seen corresponding path program 6 times [2022-01-28 13:05:46,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:46,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615236153] [2022-01-28 13:05:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:46,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:05:46,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:46,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615236153] [2022-01-28 13:05:46,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615236153] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:46,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169141358] [2022-01-28 13:05:46,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:05:46,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:46,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:46,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 13:05:46,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-28 13:05:46,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:05:46,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 13:05:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:47,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:05:47,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169141358] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:47,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:47,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 18 [2022-01-28 13:05:47,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281385543] [2022-01-28 13:05:47,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:47,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-28 13:05:47,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-28 13:05:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-01-28 13:05:47,340 INFO L87 Difference]: Start difference. First operand 5214 states and 17021 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:47,975 INFO L93 Difference]: Finished difference Result 20962 states and 69017 transitions. [2022-01-28 13:05:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-28 13:05:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-28 13:05:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:48,010 INFO L225 Difference]: With dead ends: 20962 [2022-01-28 13:05:48,010 INFO L226 Difference]: Without dead ends: 15478 [2022-01-28 13:05:48,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=1278, Unknown=0, NotChecked=0, Total=1640 [2022-01-28 13:05:48,011 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1729 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:48,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 1496 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 13:05:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15478 states. [2022-01-28 13:05:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15478 to 11108. [2022-01-28 13:05:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11108 states, 11107 states have (on average 3.219141082200414) internal successors, (35755), 11107 states have internal predecessors, (35755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11108 states to 11108 states and 35755 transitions. [2022-01-28 13:05:48,296 INFO L78 Accepts]: Start accepts. Automaton has 11108 states and 35755 transitions. Word has length 90 [2022-01-28 13:05:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:48,296 INFO L470 AbstractCegarLoop]: Abstraction has 11108 states and 35755 transitions. [2022-01-28 13:05:48,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 11108 states and 35755 transitions. [2022-01-28 13:05:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-28 13:05:48,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:48,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:48,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:48,519 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 795999572, now seen corresponding path program 1 times [2022-01-28 13:05:48,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:48,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048518782] [2022-01-28 13:05:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:48,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:05:48,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048518782] [2022-01-28 13:05:48,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048518782] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703540728] [2022-01-28 13:05:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:48,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:48,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:48,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 13:05:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:48,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 13:05:48,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:48,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:05:49,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703540728] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:49,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:49,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2022-01-28 13:05:49,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865969026] [2022-01-28 13:05:49,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:49,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-28 13:05:49,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-28 13:05:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:05:49,043 INFO L87 Difference]: Start difference. First operand 11108 states and 35755 transitions. Second operand has 15 states, 15 states have (on average 10.0) internal successors, (150), 15 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:49,271 INFO L93 Difference]: Finished difference Result 28216 states and 90597 transitions. [2022-01-28 13:05:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 13:05:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.0) internal successors, (150), 15 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-28 13:05:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:49,336 INFO L225 Difference]: With dead ends: 28216 [2022-01-28 13:05:49,336 INFO L226 Difference]: Without dead ends: 26026 [2022-01-28 13:05:49,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-28 13:05:49,337 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 497 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:49,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 730 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26026 states. [2022-01-28 13:05:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26026 to 19316. [2022-01-28 13:05:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19316 states, 19315 states have (on average 3.2232461817240488) internal successors, (62257), 19315 states have internal predecessors, (62257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19316 states to 19316 states and 62257 transitions. [2022-01-28 13:05:49,966 INFO L78 Accepts]: Start accepts. Automaton has 19316 states and 62257 transitions. Word has length 90 [2022-01-28 13:05:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:49,966 INFO L470 AbstractCegarLoop]: Abstraction has 19316 states and 62257 transitions. [2022-01-28 13:05:49,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.0) internal successors, (150), 15 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19316 states and 62257 transitions. [2022-01-28 13:05:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-28 13:05:50,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:50,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:50,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:50,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-28 13:05:50,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash 860924875, now seen corresponding path program 1 times [2022-01-28 13:05:50,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214620971] [2022-01-28 13:05:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:50,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:50,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214620971] [2022-01-28 13:05:50,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214620971] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143549307] [2022-01-28 13:05:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:50,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:50,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:50,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 13:05:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:50,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 13:05:50,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:05:50,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143549307] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:50,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:50,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-01-28 13:05:50,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148658616] [2022-01-28 13:05:50,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:50,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-28 13:05:50,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-28 13:05:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:05:50,740 INFO L87 Difference]: Start difference. First operand 19316 states and 62257 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:51,438 INFO L93 Difference]: Finished difference Result 32128 states and 106015 transitions. [2022-01-28 13:05:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-28 13:05:51,438 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-28 13:05:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:51,501 INFO L225 Difference]: With dead ends: 32128 [2022-01-28 13:05:51,501 INFO L226 Difference]: Without dead ends: 26296 [2022-01-28 13:05:51,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-01-28 13:05:51,502 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 686 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:51,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1824 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 13:05:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26296 states. [2022-01-28 13:05:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26296 to 11694. [2022-01-28 13:05:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11694 states, 11693 states have (on average 3.2337295818010774) internal successors, (37812), 11693 states have internal predecessors, (37812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11694 states to 11694 states and 37812 transitions. [2022-01-28 13:05:51,771 INFO L78 Accepts]: Start accepts. Automaton has 11694 states and 37812 transitions. Word has length 95 [2022-01-28 13:05:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:51,772 INFO L470 AbstractCegarLoop]: Abstraction has 11694 states and 37812 transitions. [2022-01-28 13:05:51,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11694 states and 37812 transitions. [2022-01-28 13:05:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-28 13:05:51,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:51,849 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:51,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:52,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-28 13:05:52,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:52,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1412610230, now seen corresponding path program 7 times [2022-01-28 13:05:52,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:52,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912263690] [2022-01-28 13:05:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:52,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:05:52,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:52,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912263690] [2022-01-28 13:05:52,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912263690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:52,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261582842] [2022-01-28 13:05:52,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:05:52,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:52,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:52,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 13:05:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:52,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-28 13:05:52,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:05:52,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:05:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261582842] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:52,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:52,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2022-01-28 13:05:52,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101993486] [2022-01-28 13:05:52,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:52,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-28 13:05:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-28 13:05:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-28 13:05:52,633 INFO L87 Difference]: Start difference. First operand 11694 states and 37812 transitions. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:52,940 INFO L93 Difference]: Finished difference Result 35529 states and 114310 transitions. [2022-01-28 13:05:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-28 13:05:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-28 13:05:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:53,015 INFO L225 Difference]: With dead ends: 35529 [2022-01-28 13:05:53,015 INFO L226 Difference]: Without dead ends: 33465 [2022-01-28 13:05:53,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-01-28 13:05:53,016 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 661 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:53,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1249 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33465 states. [2022-01-28 13:05:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33465 to 17374. [2022-01-28 13:05:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17374 states, 17373 states have (on average 3.2540724112128014) internal successors, (56533), 17373 states have internal predecessors, (56533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17374 states to 17374 states and 56533 transitions. [2022-01-28 13:05:53,510 INFO L78 Accepts]: Start accepts. Automaton has 17374 states and 56533 transitions. Word has length 100 [2022-01-28 13:05:53,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:53,510 INFO L470 AbstractCegarLoop]: Abstraction has 17374 states and 56533 transitions. [2022-01-28 13:05:53,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17374 states and 56533 transitions. [2022-01-28 13:05:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-28 13:05:53,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:53,540 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:53,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:53,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:53,755 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash -598964331, now seen corresponding path program 2 times [2022-01-28 13:05:53,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:53,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683710394] [2022-01-28 13:05:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:53,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-28 13:05:53,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683710394] [2022-01-28 13:05:53,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683710394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525481023] [2022-01-28 13:05:53,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:05:53,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:53,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:53,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:53,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 13:05:53,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:05:53,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:05:53,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-28 13:05:53,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 13:05:54,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-28 13:05:54,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525481023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:54,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:54,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 17 [2022-01-28 13:05:54,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982790875] [2022-01-28 13:05:54,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:54,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-28 13:05:54,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-28 13:05:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-01-28 13:05:54,286 INFO L87 Difference]: Start difference. First operand 17374 states and 56533 transitions. Second operand has 17 states, 17 states have (on average 9.352941176470589) internal successors, (159), 17 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:54,887 INFO L93 Difference]: Finished difference Result 62907 states and 203137 transitions. [2022-01-28 13:05:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-28 13:05:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.352941176470589) internal successors, (159), 17 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-28 13:05:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:55,035 INFO L225 Difference]: With dead ends: 62907 [2022-01-28 13:05:55,035 INFO L226 Difference]: Without dead ends: 58181 [2022-01-28 13:05:55,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-01-28 13:05:55,036 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1290 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:55,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 1125 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:05:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58181 states. [2022-01-28 13:05:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58181 to 36890. [2022-01-28 13:05:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36890 states, 36889 states have (on average 3.2190897015370434) internal successors, (118749), 36889 states have internal predecessors, (118749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36890 states to 36890 states and 118749 transitions. [2022-01-28 13:05:56,028 INFO L78 Accepts]: Start accepts. Automaton has 36890 states and 118749 transitions. Word has length 100 [2022-01-28 13:05:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 36890 states and 118749 transitions. [2022-01-28 13:05:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.352941176470589) internal successors, (159), 17 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36890 states and 118749 transitions. [2022-01-28 13:05:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-28 13:05:56,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:56,090 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:56,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-28 13:05:56,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-28 13:05:56,291 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1577029728, now seen corresponding path program 8 times [2022-01-28 13:05:56,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627907394] [2022-01-28 13:05:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:56,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:05:56,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:56,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627907394] [2022-01-28 13:05:56,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627907394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:56,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643397966] [2022-01-28 13:05:56,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:05:56,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:56,375 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:56,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 13:05:56,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:05:56,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:05:56,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-28 13:05:56,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:05:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:05:56,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:05:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:05:56,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643397966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:05:56,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:05:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-01-28 13:05:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807796151] [2022-01-28 13:05:56,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:05:56,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-28 13:05:56,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:05:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-28 13:05:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-01-28 13:05:56,880 INFO L87 Difference]: Start difference. First operand 36890 states and 118749 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:05:58,135 INFO L93 Difference]: Finished difference Result 67218 states and 222143 transitions. [2022-01-28 13:05:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 13:05:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-28 13:05:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:05:58,299 INFO L225 Difference]: With dead ends: 67218 [2022-01-28 13:05:58,300 INFO L226 Difference]: Without dead ends: 61722 [2022-01-28 13:05:58,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=2019, Unknown=0, NotChecked=0, Total=2652 [2022-01-28 13:05:58,301 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 599 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:05:58,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2564 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 13:05:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61722 states. [2022-01-28 13:05:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61722 to 39552. [2022-01-28 13:05:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39552 states, 39551 states have (on average 3.2155192030542845) internal successors, (127177), 39551 states have internal predecessors, (127177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39552 states to 39552 states and 127177 transitions. [2022-01-28 13:05:59,320 INFO L78 Accepts]: Start accepts. Automaton has 39552 states and 127177 transitions. Word has length 105 [2022-01-28 13:05:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:05:59,321 INFO L470 AbstractCegarLoop]: Abstraction has 39552 states and 127177 transitions. [2022-01-28 13:05:59,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:05:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39552 states and 127177 transitions. [2022-01-28 13:05:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-28 13:05:59,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:05:59,383 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:05:59,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-28 13:05:59,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:59,584 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:05:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:05:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1221091837, now seen corresponding path program 9 times [2022-01-28 13:05:59,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:05:59,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907262937] [2022-01-28 13:05:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:05:59,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:05:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:05:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-28 13:05:59,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:05:59,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907262937] [2022-01-28 13:05:59,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907262937] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:05:59,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128037364] [2022-01-28 13:05:59,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:05:59,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:05:59,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:05:59,681 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:05:59,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 13:05:59,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-28 13:05:59,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:05:59,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:05:59,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:06:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:06:00,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:06:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-28 13:06:00,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128037364] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:06:00,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:06:00,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 23 [2022-01-28 13:06:00,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021265144] [2022-01-28 13:06:00,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:06:00,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-28 13:06:00,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:06:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-28 13:06:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2022-01-28 13:06:00,632 INFO L87 Difference]: Start difference. First operand 39552 states and 127177 transitions. Second operand has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:06:03,928 INFO L93 Difference]: Finished difference Result 186932 states and 611558 transitions. [2022-01-28 13:06:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-28 13:06:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-28 13:06:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:06:04,691 INFO L225 Difference]: With dead ends: 186932 [2022-01-28 13:06:04,691 INFO L226 Difference]: Without dead ends: 180692 [2022-01-28 13:06:04,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4506 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2406, Invalid=9150, Unknown=0, NotChecked=0, Total=11556 [2022-01-28 13:06:04,693 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 4628 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:06:04,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4628 Valid, 4826 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-28 13:06:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180692 states. [2022-01-28 13:06:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180692 to 141523. [2022-01-28 13:06:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141523 states, 141522 states have (on average 3.2372846624553073) internal successors, (458147), 141522 states have internal predecessors, (458147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141523 states to 141523 states and 458147 transitions. [2022-01-28 13:06:09,409 INFO L78 Accepts]: Start accepts. Automaton has 141523 states and 458147 transitions. Word has length 110 [2022-01-28 13:06:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:06:09,410 INFO L470 AbstractCegarLoop]: Abstraction has 141523 states and 458147 transitions. [2022-01-28 13:06:09,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.217391304347826) internal successors, (189), 23 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 141523 states and 458147 transitions. [2022-01-28 13:06:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-28 13:06:09,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:06:09,930 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:06:09,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 13:06:10,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:06:10,131 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:06:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:06:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1857908203, now seen corresponding path program 2 times [2022-01-28 13:06:10,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:06:10,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454721891] [2022-01-28 13:06:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:06:10,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:06:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:06:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:06:10,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:06:10,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454721891] [2022-01-28 13:06:10,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454721891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:06:10,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667044445] [2022-01-28 13:06:10,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:06:10,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:06:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:06:10,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:06:10,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 13:06:10,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:06:10,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:06:10,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 13:06:10,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:06:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 19 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:06:10,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:06:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 33 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-28 13:06:10,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667044445] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:06:10,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:06:10,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 23 [2022-01-28 13:06:10,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357815466] [2022-01-28 13:06:10,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:06:10,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-28 13:06:10,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:06:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-28 13:06:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-28 13:06:10,776 INFO L87 Difference]: Start difference. First operand 141523 states and 458147 transitions. Second operand has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:06:15,243 INFO L93 Difference]: Finished difference Result 349213 states and 1143029 transitions. [2022-01-28 13:06:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-28 13:06:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-28 13:06:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:06:16,677 INFO L225 Difference]: With dead ends: 349213 [2022-01-28 13:06:16,678 INFO L226 Difference]: Without dead ends: 324613 [2022-01-28 13:06:16,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3138, Invalid=11142, Unknown=0, NotChecked=0, Total=14280 [2022-01-28 13:06:16,681 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1879 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-28 13:06:16,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 4462 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-28 13:06:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324613 states. [2022-01-28 13:06:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324613 to 123647. [2022-01-28 13:06:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123647 states, 123646 states have (on average 3.1769729712243016) internal successors, (392820), 123646 states have internal predecessors, (392820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123647 states to 123647 states and 392820 transitions. [2022-01-28 13:06:21,863 INFO L78 Accepts]: Start accepts. Automaton has 123647 states and 392820 transitions. Word has length 115 [2022-01-28 13:06:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:06:21,863 INFO L470 AbstractCegarLoop]: Abstraction has 123647 states and 392820 transitions. [2022-01-28 13:06:21,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 123647 states and 392820 transitions. [2022-01-28 13:06:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-28 13:06:22,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:06:22,121 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:06:22,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-28 13:06:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-28 13:06:22,327 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:06:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:06:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1184682140, now seen corresponding path program 3 times [2022-01-28 13:06:22,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:06:22,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823849271] [2022-01-28 13:06:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:06:22,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:06:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:06:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:06:22,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:06:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823849271] [2022-01-28 13:06:22,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823849271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:06:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982728772] [2022-01-28 13:06:22,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:06:22,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:06:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:06:22,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:06:22,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 13:06:22,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-28 13:06:22,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:06:22,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 13:06:22,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:06:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 74 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:06:22,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:06:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-28 13:06:23,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982728772] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:06:23,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:06:23,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 18 [2022-01-28 13:06:23,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610662107] [2022-01-28 13:06:23,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:06:23,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-28 13:06:23,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:06:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-28 13:06:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-01-28 13:06:23,267 INFO L87 Difference]: Start difference. First operand 123647 states and 392820 transitions. Second operand has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:06:25,883 INFO L93 Difference]: Finished difference Result 319733 states and 1021620 transitions. [2022-01-28 13:06:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-28 13:06:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-28 13:06:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:06:27,377 INFO L225 Difference]: With dead ends: 319733 [2022-01-28 13:06:27,378 INFO L226 Difference]: Without dead ends: 311573 [2022-01-28 13:06:27,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=538, Invalid=1624, Unknown=0, NotChecked=0, Total=2162 [2022-01-28 13:06:27,378 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 764 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:06:27,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 3137 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 13:06:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311573 states. [2022-01-28 13:06:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311573 to 208727. [2022-01-28 13:06:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208727 states, 208726 states have (on average 3.1757088240085087) internal successors, (662853), 208726 states have internal predecessors, (662853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208727 states to 208727 states and 662853 transitions. [2022-01-28 13:06:34,929 INFO L78 Accepts]: Start accepts. Automaton has 208727 states and 662853 transitions. Word has length 125 [2022-01-28 13:06:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:06:34,930 INFO L470 AbstractCegarLoop]: Abstraction has 208727 states and 662853 transitions. [2022-01-28 13:06:34,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.666666666666667) internal successors, (138), 18 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 208727 states and 662853 transitions. [2022-01-28 13:06:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-28 13:06:35,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:06:35,822 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:06:35,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 13:06:36,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-28 13:06:36,042 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:06:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:06:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -659432885, now seen corresponding path program 4 times [2022-01-28 13:06:36,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:06:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986533172] [2022-01-28 13:06:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:06:36,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:06:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:06:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-28 13:06:36,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:06:36,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986533172] [2022-01-28 13:06:36,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986533172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:06:36,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971520137] [2022-01-28 13:06:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:06:36,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:06:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:06:36,224 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:06:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-28 13:06:36,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:06:36,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:06:36,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-28 13:06:36,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:06:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-28 13:06:36,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:06:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 85 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-28 13:06:36,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971520137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:06:36,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:06:36,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 15 [2022-01-28 13:06:36,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205992604] [2022-01-28 13:06:36,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:06:36,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-28 13:06:36,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:06:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-28 13:06:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:06:36,831 INFO L87 Difference]: Start difference. First operand 208727 states and 662853 transitions. Second operand has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:06:39,639 INFO L93 Difference]: Finished difference Result 368448 states and 1169023 transitions. [2022-01-28 13:06:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-28 13:06:39,640 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-28 13:06:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:06:41,307 INFO L225 Difference]: With dead ends: 368448 [2022-01-28 13:06:41,307 INFO L226 Difference]: Without dead ends: 353592 [2022-01-28 13:06:41,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-28 13:06:41,308 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 804 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:06:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 693 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:06:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353592 states. [2022-01-28 13:06:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353592 to 250911. [2022-01-28 13:06:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250911 states, 250910 states have (on average 3.187840261448328) internal successors, (799861), 250910 states have internal predecessors, (799861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250911 states to 250911 states and 799861 transitions. [2022-01-28 13:06:49,667 INFO L78 Accepts]: Start accepts. Automaton has 250911 states and 799861 transitions. Word has length 125 [2022-01-28 13:06:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:06:49,668 INFO L470 AbstractCegarLoop]: Abstraction has 250911 states and 799861 transitions. [2022-01-28 13:06:49,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:06:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 250911 states and 799861 transitions. [2022-01-28 13:06:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-28 13:06:50,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:06:50,438 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:06:50,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-28 13:06:50,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-28 13:06:50,643 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:06:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:06:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash 722839563, now seen corresponding path program 5 times [2022-01-28 13:06:50,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:06:50,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973011690] [2022-01-28 13:06:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:06:50,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:06:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:06:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 63 proven. 125 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-28 13:06:50,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:06:50,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973011690] [2022-01-28 13:06:50,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973011690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:06:50,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633573591] [2022-01-28 13:06:50,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 13:06:50,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:06:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:06:50,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:06:50,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-28 13:06:50,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-28 13:06:50,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:06:50,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-28 13:06:50,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:06:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 45 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:06:51,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:06:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 101 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 13:06:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633573591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:06:51,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:06:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 39 [2022-01-28 13:06:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737108424] [2022-01-28 13:06:51,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:06:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-28 13:06:51,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:06:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-28 13:06:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1135, Unknown=0, NotChecked=0, Total=1482 [2022-01-28 13:06:51,777 INFO L87 Difference]: Start difference. First operand 250911 states and 799861 transitions. Second operand has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:07:05,580 INFO L93 Difference]: Finished difference Result 917785 states and 2948020 transitions. [2022-01-28 13:07:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-01-28 13:07:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-01-28 13:07:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:07:10,687 INFO L225 Difference]: With dead ends: 917785 [2022-01-28 13:07:10,687 INFO L226 Difference]: Without dead ends: 873553 [2022-01-28 13:07:10,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20416 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=11114, Invalid=44346, Unknown=0, NotChecked=0, Total=55460 [2022-01-28 13:07:10,694 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 3114 mSDsluCounter, 9715 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 10210 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 13:07:10,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 10210 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 13:07:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873553 states. [2022-01-28 13:07:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873553 to 107221. [2022-01-28 13:07:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107221 states, 107220 states have (on average 3.174193247528446) internal successors, (340337), 107220 states have internal predecessors, (340337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107221 states to 107221 states and 340337 transitions. [2022-01-28 13:07:22,284 INFO L78 Accepts]: Start accepts. Automaton has 107221 states and 340337 transitions. Word has length 135 [2022-01-28 13:07:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:07:22,284 INFO L470 AbstractCegarLoop]: Abstraction has 107221 states and 340337 transitions. [2022-01-28 13:07:22,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.384615384615385) internal successors, (249), 39 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 107221 states and 340337 transitions. [2022-01-28 13:07:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-28 13:07:22,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:07:22,483 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:07:22,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-28 13:07:22,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:07:22,684 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:07:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:07:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -264455356, now seen corresponding path program 6 times [2022-01-28 13:07:22,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:07:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814137604] [2022-01-28 13:07:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:07:22,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:07:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:07:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-28 13:07:22,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:07:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814137604] [2022-01-28 13:07:22,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814137604] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:07:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834593624] [2022-01-28 13:07:22,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 13:07:22,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:07:22,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:07:22,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:07:22,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-28 13:07:22,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-28 13:07:22,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:07:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-28 13:07:22,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:07:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-28 13:07:23,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:07:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-28 13:07:23,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834593624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:07:23,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:07:23,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 13 [2022-01-28 13:07:23,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305813459] [2022-01-28 13:07:23,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:07:23,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-28 13:07:23,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:07:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-28 13:07:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-28 13:07:23,330 INFO L87 Difference]: Start difference. First operand 107221 states and 340337 transitions. Second operand has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:07:24,564 INFO L93 Difference]: Finished difference Result 163471 states and 517007 transitions. [2022-01-28 13:07:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-28 13:07:24,564 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-01-28 13:07:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:07:25,036 INFO L225 Difference]: With dead ends: 163471 [2022-01-28 13:07:25,036 INFO L226 Difference]: Without dead ends: 160199 [2022-01-28 13:07:25,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-28 13:07:25,037 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 444 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:07:25,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 583 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:07:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160199 states. [2022-01-28 13:07:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160199 to 113255. [2022-01-28 13:07:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113255 states, 113254 states have (on average 3.171826160665407) internal successors, (359222), 113254 states have internal predecessors, (359222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113255 states to 113255 states and 359222 transitions. [2022-01-28 13:07:27,954 INFO L78 Accepts]: Start accepts. Automaton has 113255 states and 359222 transitions. Word has length 140 [2022-01-28 13:07:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:07:27,954 INFO L470 AbstractCegarLoop]: Abstraction has 113255 states and 359222 transitions. [2022-01-28 13:07:27,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 113255 states and 359222 transitions. [2022-01-28 13:07:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-28 13:07:28,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:07:28,501 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:07:28,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-28 13:07:28,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:07:28,715 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:07:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:07:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -441716356, now seen corresponding path program 7 times [2022-01-28 13:07:28,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:07:28,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730852790] [2022-01-28 13:07:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:07:28,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:07:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:07:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 132 proven. 128 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 13:07:28,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:07:28,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730852790] [2022-01-28 13:07:28,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730852790] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:07:28,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288992144] [2022-01-28 13:07:28,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 13:07:28,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:07:28,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:07:28,855 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:07:28,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-28 13:07:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:07:28,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-28 13:07:28,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:07:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 100 proven. 160 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 13:07:29,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:07:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 132 proven. 128 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 13:07:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288992144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:07:29,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:07:29,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 20 [2022-01-28 13:07:29,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405558419] [2022-01-28 13:07:29,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:07:29,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-28 13:07:29,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:07:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-28 13:07:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-28 13:07:29,402 INFO L87 Difference]: Start difference. First operand 113255 states and 359222 transitions. Second operand has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:07:32,594 INFO L93 Difference]: Finished difference Result 374889 states and 1197759 transitions. [2022-01-28 13:07:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 13:07:32,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-28 13:07:32,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:07:34,216 INFO L225 Difference]: With dead ends: 374889 [2022-01-28 13:07:34,216 INFO L226 Difference]: Without dead ends: 364233 [2022-01-28 13:07:34,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=806, Invalid=2386, Unknown=0, NotChecked=0, Total=3192 [2022-01-28 13:07:34,217 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1108 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 13:07:34,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 3919 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-28 13:07:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364233 states. [2022-01-28 13:07:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364233 to 252297. [2022-01-28 13:07:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252297 states, 252296 states have (on average 3.1677117354218853) internal successors, (799201), 252296 states have internal predecessors, (799201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252297 states to 252297 states and 799201 transitions. [2022-01-28 13:07:43,159 INFO L78 Accepts]: Start accepts. Automaton has 252297 states and 799201 transitions. Word has length 145 [2022-01-28 13:07:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:07:43,159 INFO L470 AbstractCegarLoop]: Abstraction has 252297 states and 799201 transitions. [2022-01-28 13:07:43,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 252297 states and 799201 transitions. [2022-01-28 13:07:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-28 13:07:43,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:07:43,664 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:07:43,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-28 13:07:43,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-28 13:07:43,864 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:07:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:07:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash 341615383, now seen corresponding path program 8 times [2022-01-28 13:07:43,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:07:43,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139458801] [2022-01-28 13:07:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:07:43,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:07:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:07:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 127 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:07:44,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:07:44,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139458801] [2022-01-28 13:07:44,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139458801] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:07:44,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809273063] [2022-01-28 13:07:44,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 13:07:44,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:07:44,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:07:44,002 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:07:44,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-28 13:07:44,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 13:07:44,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:07:44,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-28 13:07:44,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:07:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 129 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-28 13:07:44,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:07:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 175 proven. 127 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-28 13:07:44,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809273063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:07:44,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:07:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 14 [2022-01-28 13:07:44,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524467686] [2022-01-28 13:07:44,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:07:44,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-28 13:07:44,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:07:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-28 13:07:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-28 13:07:44,524 INFO L87 Difference]: Start difference. First operand 252297 states and 799201 transitions. Second operand has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:07:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:07:49,020 INFO L93 Difference]: Finished difference Result 619100 states and 1968389 transitions. [2022-01-28 13:07:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 13:07:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-01-28 13:07:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:07:51,681 INFO L225 Difference]: With dead ends: 619100 [2022-01-28 13:07:51,682 INFO L226 Difference]: Without dead ends: 606164 [2022-01-28 13:07:51,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-28 13:07:51,682 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 728 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 13:07:51,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 790 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 13:07:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606164 states. [2022-01-28 13:08:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606164 to 491053. [2022-01-28 13:08:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491053 states, 491052 states have (on average 3.1854162084667204) internal successors, (1564205), 491052 states have internal predecessors, (1564205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:08:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491053 states to 491053 states and 1564205 transitions. [2022-01-28 13:08:10,749 INFO L78 Accepts]: Start accepts. Automaton has 491053 states and 1564205 transitions. Word has length 150 [2022-01-28 13:08:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:08:10,749 INFO L470 AbstractCegarLoop]: Abstraction has 491053 states and 1564205 transitions. [2022-01-28 13:08:10,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:08:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 491053 states and 1564205 transitions. [2022-01-28 13:08:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-28 13:08:12,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:08:12,255 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:08:12,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-28 13:08:12,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-28 13:08:12,463 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:08:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:08:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1504486869, now seen corresponding path program 9 times [2022-01-28 13:08:12,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:08:12,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451797465] [2022-01-28 13:08:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:08:12,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:08:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:08:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 143 proven. 215 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:08:12,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:08:12,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451797465] [2022-01-28 13:08:12,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451797465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:08:12,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212647759] [2022-01-28 13:08:12,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 13:08:12,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:08:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:08:12,775 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:08:12,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-28 13:08:13,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-28 13:08:13,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:08:13,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-28 13:08:13,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:08:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 143 proven. 215 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:08:13,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:08:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 181 proven. 177 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-28 13:08:13,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212647759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:08:13,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:08:13,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 24 [2022-01-28 13:08:13,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6580133] [2022-01-28 13:08:13,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:08:13,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-28 13:08:13,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:08:13,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-28 13:08:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2022-01-28 13:08:13,660 INFO L87 Difference]: Start difference. First operand 491053 states and 1564205 transitions. Second operand has 24 states, 24 states have (on average 7.333333333333333) internal successors, (176), 24 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:08:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 13:08:29,075 INFO L93 Difference]: Finished difference Result 1226899 states and 3927223 transitions. [2022-01-28 13:08:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-28 13:08:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.333333333333333) internal successors, (176), 24 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-01-28 13:08:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 13:08:36,154 INFO L225 Difference]: With dead ends: 1226899 [2022-01-28 13:08:36,155 INFO L226 Difference]: Without dead ends: 1212451 [2022-01-28 13:08:36,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2022-01-28 13:08:36,155 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 905 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 13:08:36,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 5736 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 13:08:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212451 states. [2022-01-28 13:09:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212451 to 506235. [2022-01-28 13:09:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506235 states, 506234 states have (on average 3.177338938119526) internal successors, (1608477), 506234 states have internal predecessors, (1608477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:09:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506235 states to 506235 states and 1608477 transitions. [2022-01-28 13:09:09,298 INFO L78 Accepts]: Start accepts. Automaton has 506235 states and 1608477 transitions. Word has length 155 [2022-01-28 13:09:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 13:09:09,299 INFO L470 AbstractCegarLoop]: Abstraction has 506235 states and 1608477 transitions. [2022-01-28 13:09:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.333333333333333) internal successors, (176), 24 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 13:09:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 506235 states and 1608477 transitions. [2022-01-28 13:09:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-28 13:09:11,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 13:09:11,026 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 8, 8, 8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 13:09:11,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-28 13:09:11,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-28 13:09:11,242 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-28 13:09:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 13:09:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1904516188, now seen corresponding path program 10 times [2022-01-28 13:09:11,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 13:09:11,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683156524] [2022-01-28 13:09:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 13:09:11,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 13:09:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 13:09:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-01-28 13:09:11,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 13:09:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683156524] [2022-01-28 13:09:11,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683156524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 13:09:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141245471] [2022-01-28 13:09:11,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 13:09:11,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 13:09:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 13:09:11,487 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 13:09:11,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-28 13:09:11,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 13:09:11,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 13:09:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-28 13:09:11,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 13:09:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 232 proven. 178 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-28 13:09:11,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 13:09:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 232 proven. 176 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-28 13:09:12,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141245471] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 13:09:12,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 13:09:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 22 [2022-01-28 13:09:12,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574913211] [2022-01-28 13:09:12,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 13:09:12,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-28 13:09:12,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 13:09:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-28 13:09:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-01-28 13:09:12,203 INFO L87 Difference]: Start difference. First operand 506235 states and 1608477 transitions. Second operand has 22 states, 22 states have (on average 9.318181818181818) internal successors, (205), 22 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)